Trace Flag impact to Mirrored Databases











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I want to enable dead lock trace flag -t1222 on a production SQL Server 2014 instance. Many databases on this instance are configured with database mirroring. What (if any) impact to mirrored databases will occur after applying -t1222 and restarting the server?






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    Why not use extended events to track the deadlocks instead?
    – vonPryz
    5 hours ago















up vote
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I want to enable dead lock trace flag -t1222 on a production SQL Server 2014 instance. Many databases on this instance are configured with database mirroring. What (if any) impact to mirrored databases will occur after applying -t1222 and restarting the server?






sql-server sql-server-2014 mirroring trace-flags







share|improve this question




















  • 3




    Why not use extended events to track the deadlocks instead?
    – vonPryz
    5 hours ago













up vote
1
down vote

favorite









up vote
1
down vote

favorite











I want to enable dead lock trace flag -t1222 on a production SQL Server 2014 instance. Many databases on this instance are configured with database mirroring. What (if any) impact to mirrored databases will occur after applying -t1222 and restarting the server?






sql-server sql-server-2014 mirroring trace-flags







share|improve this question















I want to enable dead lock trace flag -t1222 on a production SQL Server 2014 instance. Many databases on this instance are configured with database mirroring. What (if any) impact to mirrored databases will occur after applying -t1222 and restarting the server?






sql-server sql-server-2014 mirroring trace-flags




sql-server sql-server-2014 mirroring trace-flags






share|improve this question















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edited 5 hours ago









Tom V

13.8k74676




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asked 7 hours ago









Nasar Babu Chowdary

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63








  • 3




    Why not use extended events to track the deadlocks instead?
    – vonPryz
    5 hours ago














  • 3




    Why not use extended events to track the deadlocks instead?
    – vonPryz
    5 hours ago








3




3




Why not use extended events to track the deadlocks instead?
– vonPryz
5 hours ago




Why not use extended events to track the deadlocks instead?
– vonPryz
5 hours ago










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What (if any) impact to mirrored databases will occur after applying -t1222 and restarting the server?




Since 1222 writes deadlock information to the log, the impact to mirroring itself will be nothing. Secondary effects should also be intangible in a normal environment. I'd only be worried if, for some reason, you have so many deadlocks that the Errorlog ends up filling your drive as this is fairly benign.



Also, by default, the extended events session does track deadlock information but it may not have all of the deadlock graph given the size of the deadlock graph.






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    What (if any) impact to mirrored databases will occur after applying -t1222 and restarting the server?




    Since 1222 writes deadlock information to the log, the impact to mirroring itself will be nothing. Secondary effects should also be intangible in a normal environment. I'd only be worried if, for some reason, you have so many deadlocks that the Errorlog ends up filling your drive as this is fairly benign.



    Also, by default, the extended events session does track deadlock information but it may not have all of the deadlock graph given the size of the deadlock graph.






    share|improve this answer

























      up vote
      4
      down vote














      What (if any) impact to mirrored databases will occur after applying -t1222 and restarting the server?




      Since 1222 writes deadlock information to the log, the impact to mirroring itself will be nothing. Secondary effects should also be intangible in a normal environment. I'd only be worried if, for some reason, you have so many deadlocks that the Errorlog ends up filling your drive as this is fairly benign.



      Also, by default, the extended events session does track deadlock information but it may not have all of the deadlock graph given the size of the deadlock graph.






      share|improve this answer























        up vote
        4
        down vote










        up vote
        4
        down vote










        What (if any) impact to mirrored databases will occur after applying -t1222 and restarting the server?




        Since 1222 writes deadlock information to the log, the impact to mirroring itself will be nothing. Secondary effects should also be intangible in a normal environment. I'd only be worried if, for some reason, you have so many deadlocks that the Errorlog ends up filling your drive as this is fairly benign.



        Also, by default, the extended events session does track deadlock information but it may not have all of the deadlock graph given the size of the deadlock graph.






        share|improve this answer













        What (if any) impact to mirrored databases will occur after applying -t1222 and restarting the server?




        Since 1222 writes deadlock information to the log, the impact to mirroring itself will be nothing. Secondary effects should also be intangible in a normal environment. I'd only be worried if, for some reason, you have so many deadlocks that the Errorlog ends up filling your drive as this is fairly benign.



        Also, by default, the extended events session does track deadlock information but it may not have all of the deadlock graph given the size of the deadlock graph.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 3 hours ago









        Sean Gallardy

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